Gas scrubber



S. L. PEARCE Oct. 10, 1933.

GAS SCRUBBER 'Filed March 16, 1933 CZ Ji/y Patented Oct. J 1933 FlCE 1.929.712 GAS SCRUBBEB.

StandenLeonard Pearce, London, England, as-

signor of one-half to London Power Company Limited, London, England Application March 16, 1933, Serial No. 661,169, and in Great Britain March 19, 1932 7 i2 Claims. (01.261-108) This invention relates to scrubbers for gaswashing or purification or for'other treatmentv of gases with liquids in either co-flow or coun-.

ter-fiow directions, and has for its object to devise an improvedform of scrubber by means of which very intimate contact between the gas and the treating medium may be attained without undue interference with the flow of the gases 7 by resistance to their passage through the one board or plate slightly overlaps the lower scrubber.

The invention consists in a scrubber compris ing a series of boards or plates arranged ina number of superposed rows or layers, the boards or plates of one row or layer sloping downwards in one direction while those in the next adjacent row or layer slope downwards in the opposite direction'and so on throughout the series.

The invention also consists in a scrubber of the above character having at the upper edge of each board or plate a; fillet or strip so disposed as to catch the liquid from a higher layer and conduct the'same to the under-side of the board or plate of the next lower layer. 7

Further features of the invention willbe apparent from the description given hereafter. The accompanying drawing illustrates several modes of carrying out the invention;

Figure 1 is a sectional elevation of one'form of scrubber in accordance with'the invention.

Figure 2 illustrates more or less diagrammati-;

cally a modification.

Figure 3 is a section showing a modified de-' tail, and r Figure 4 is a broken front elevation of a board or plate. v

In carrying my invention'into effect in one convenient manner when, for example, .devising a scrubber suitable for use with a process for cleaning or purifying flue gases or the like, I form myscrubber with an outer casing a and a number of superposed,- rows or layers each comprising a plurality of boards 1) or plates of wood, metal orother suitable material, and of any convenientdimensions, the layers of plates or boards running horizontally across the tank,

or chamber within the casing or tower a in which they are arranged.

The boards or plates of the respective layers are parallel to one another'and arranged at an inclination to the horizontal, those in one row,-

for example, sloping downwards towards the left while those in the next adjacent row slope downwards towards the right and so on throughout the whole'series of rows or layers.

Each board or plate is provided at its upper edge with a strip or fillet c which may be secured upon the face of the plate as shown in Figure 1 or upon the edge thereof as shown in Figure 3 andwhich is disposed substantially at right angles to the plate or board and the outer upper edge of the latter or of the fillet is rounded and the lower edges of the boards of one layedge of the adjacent board or plate) and the layers or rows may also themselves be somewhat.

spaced apart and the arrangement is such that while very intimate contact'between the gas and the treating liquid can be obtained there will be no undue resistance to'thepassage of the gas through the scrubber.

'When the plates or boards show .a tendency to sag or warp in such a manner as to collect the flow of washing medium to a greater .ex-

or plate by providing the lower edge with a, $81:-

' rated or like formation (1 as shown in Figure 4. Figure 2 shows a series of scrubber plates f formed of metal in which the fillet c at the upper edge of each board isformed as a flange by bending the metal plate. I

The invention is applicable to scrubbersfor tentat onepart of thepboard than at others 'I' V -may'ensure a substantially even flow of washing medium over the whole length of each board gas-washing or similar operations where the fiow of the gas and treating medium is} in the same direction or in opposite directions and I may vary the number and shape of the individual plates or boards and the manner of disposing the layers relatively to one'another-depending upon the particular purpose for which the scrubber is to be employed or any practical requirements that may have to be fulfilled.

I claim:- 1 V 1. A gas scrubber comprising a series of boards or plates arranged in a number of superposed rows, the boards or plates of one row sloping downwards in one direction while those in the next'adjacent row slope downwards in the; op-. posite direction and at the upper edge of each board or plate a fillet or strip so disposed as to catch the liquid from a higher row and conduct" the same to the under-side of the board or plate of the next lower row. v

2. A gas scrubber comprising a series of metal plates arranged in anumber of superposedrows, the plates of one row sloping downwards in one direction while those in the next adjacent row slope downwards in the opposite direction and each plate being bent over at its upper edge to form a flange or fillet disposed to catch falling liquid-and direct the same to the under-side of the plate. I r

f STANDEN LEONARD PEARCE. 

